Design and manufacturing of automobile and motorcycle molds (including stamping dies, injection molds, compression molds, etc.) and fixtures (welding fixtures, inspection fixtures, etc.); production of fine blanking dies, precision cavity molds, and mold standard parts; design and production of injection molded parts; production and sales of plastic products, plastic parts, and daily plastic sundries (self-produced products); import and export of goods, and import and export of technology.